Your copper peptide product should be this exact blue. If it isn't, you already have your answer. GHK-Cu is blue because of coordination chemistry, not dye. The Cu²⁺ ion at the center US$ 29.96 Min. order: 1 piece ★★★★★ 4.5 (80 reviews) Sold : Login>>
GHK-Cu Copper Peptide Face Tonic (30 mL) | Reduces Appearance of Fine Lines US$ 24.06 Min. order: 1 piece ★★★★★ 4.4 (249 reviews) Sold : Login>>
Why Collagen Loss Accelerates After 40: The Role of GHK-Cu in Menopaus – Pure & Cimple US$ 22.94 Min. order: 1 piece ★★★★★ 4.1 (283 reviews) Sold : Login>>
GHK-Cu Peptide: Beginner's Guide to Potential Benefits US$ 29.79 Min. order: 1 piece ★★★★★ 4.3 (43 reviews) Sold : Login>>